Journal
JOURNAL OF ENERGY STORAGE
Volume 32, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2020.101671
Keywords
Electrospun nanofibers; Carbonization; CoNi nanoparticles; Supercapacitors
Categories
Funding
- Scientific and Technological Research Council of Turkey (TUBITAK)-International Industrial RD Project [TEYDEB 1509-No: 9160035]
- EU ERANET-INCOMERA project programme
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In this paper, we proposed that CoNi-alloy nanoparticles (NPs) can be directly encapsulated carbon nanofibers (CNFs) via electrospinning process followed by heat treatment. By adjusting the concentration of the Co/Ni metallic salts, the electrochemical properties of the resultant nanofibers can easily be tuned. CoNi-alloy NPs embedded in CNF resulted in 1.4 times electrochemical performance compared to the pure CNF. The assembled symmetric supercapacitor (SC) shows a high a specific capacitance of 132 Fg(-1) at 1 Ag-1 and it can deliver a specific energy of 4.60 Whkg(-1) with a specific power of 250 Wkg(-1) with 85.3% capacitance retention up to 10,000 cycles. This work can provide a key strategy for a rapid design of bimetallic alloy nanoparticles directly from their salts in carbon nanofiber for various applications.
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